Notwithstanding anything contained in article 13, no law
giving effect to the policy of the State towards securing _32[all or
any of the principles laid down in Part IV] shall be deemed to be void
on the ground that it is inconsistent with, or takes away or abridges
any of the rights conferred by _33[article 14 or article 19]; _34and
no law containing a declaration that it is for giving effect to such
policy shall be called in question in any court on the ground that it
does not give effect to such policy:

Provided that where such law is made by the Legislature of a State,
the provisions of this article shall not apply thereto unless such
law, having been reserved for the consideration of the President, has
received his assent.]